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How to speed up GPIO

Question asked by tiejun he on May 15, 2015
Latest reply on May 16, 2015 by tiejun he

Hi everyone,   I'm working on iMX515, My linux driver has 3 statements :

  gpio_set_value(pin,1);

  gpio_set_value(pin,0);

  gpio_set_value(pin,1);

Then ,I can get a  negative pulse which pulse width is about 320ns. It seems too slowly, How can I speed it up?

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